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Semiconductors MCQs

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1. Are the materials in which the electrical properties lie in between the conductor and insulator





2. The resistivity is 10⁴ ohm-meter





3. Have four electrons in their outermost shell





4. The conductivity increases with the increase in temperature





5. Si, Ge, carbon and Te etc are the examples of





6. Both silicon and germanium belong to the group of the periodic table





7. Silicon can be written like





8. Germanium can be written as





9. Both silicon and germanium have electrons in their outermost valence shell





10. Semiconductors become insulator at the _____ Kelvin temperature





11. A completely filled band is called





12. A partly filled band is called





13. The empty space present between the conduction band and the valence band is called





14. The energy gap is also called





15. It only exists in the semiconductors and insulators and is absent in conductor





16. The pure semiconductor without any addition or additive is called





17. The semiconductor having some addition or additive is called





18. When a semiconductor like Si is doped with a member of group III-A having 3 valence electrons like boron is called





19. When a semiconductor like Si is doped with a member of group V-A having 5 valence electrons like antimony is called





20. The process of mixing of a semiconductor with a member of group III-A or V-A is called





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